Light-reactive apparatus



April 19 1927. 1,625,409

T. w. CASE LIGHT REACTIVE APPARATUS Filed Jam-11, 192s 19M reach/e cd/ ing a source of potential -5'.

Patented Apr. 19, 1927.

UNITED STATES. PATENTLOFFICE.

'rnnononn WILLARD case, or AUBURN, mew YQBK, assren'on '10' CASE linemen LABORATORY mconrona'rnnor AUBURN, NEW 'YORK, -conrom'rron on NEW YORK.

lmen'r-nmc'rrvn Arrmrus.

' Application filed-January 11,1923. Serial No. 611,979.

This invention relates toa certain new and improved light reactive apparatus.

The object of the invention is the production of an apparatus of-th'e character de scribed which may be produced at less cost and may be operated at less expense than similarly used apparatus as constructed at the present time without in any way decreasing the efficiency of the apparatus. More specifically the use of peculiar circuits permits the elimination of one of the sources of potential commonly used in. such hookups.

In the drawings there is illustrated an apparatus of my invention. a

The apparatus comprises an electron discharge device including'the usual bulb -1- enclosing a filament --2-, a grid -3- and a plate 4--.

The filament may be heated in any man-' ner, as by the usual heating circuit, includ- The filament -2.- is connected in circuit with the plate such circuit including a source of potential 2) and a translating device' am able to produce an apparatus utilizing a single source of potential that is equally as effective as the. usual. and known apparatus in which a separate source of potential, such as a battery, is interposed in the circuit. which directly includes the light reactive cell as well as a separate source of potential in the circuit, including the. translating device-10--.

It will be apparent that. with theresent, hook-up the. current may flow from 'attery -9- to the plate -4,'then across to the filament -2- and back to the battery, and

,at the same time current may flow from battery ---9- .thru the conductor 8 to the light reactive cell-and through conductor 7 to the grid -'-3-, then from the grid to the filament and back to the battery -9.

By this arrangement of circuits, I am able to accomplish a highly eflicient result with such transformer, all in theusual and well known manner.

Althol have shown and described a specific structure as illustrative of my inven: tion, 1 do not desire to restrict myself to the .details .ofthe structure, as various changes may be made without departing from the invention as set forth in the appendedclaims.

'1. A light-reactive apparatus comprising a three electrode electron discharge device, a

'the utilization of a single battery, which circuit connecting the filament-and plate of said device,'a circuit connecting the filament and grid of said device and containing a light reactive resistance, and a single source or potential common to .both of said circuits and adapted to energizeboth of said. circuits.

an electron-discharge device including a filament, a grid and a plate, a circuit connectingthe filament and plate of said device and containing --a source of potential, a light re active'resistance, a conductor coimecting the light reactive resistance to the grid of said device, a conductor connected to the light reactive. resistance and tapped into the filament plate circuit intermediate the said :source of potential andthe platel In witnesslwhereof I have hereunto set my "hand this 6th da of January 1923.

"f. THEOD RE" WILLARD CASE.

2. A light reactive apparatus-comprising 

